Ok so on my 4S I used on average 1GB of data per month. The most I ever used on it was 1.3 GB per month and I never restricted myself but whenever I could I was connected to WiFi. So now on my 5 I'm doing the same exact thing and only 7 days into my billing cycle I've used 1 GB! The reason I didn't care getting out of Unlimited Data into 2GB per month is my track record was VERY clean so I didn't need anymore data. I know there was a problem with data still being used when connected to WiFi but I did the update I day or two before my recent billing cycle started...so that shouldn't be a problem anymore. Does anyone have any idea what the hell is going on?